Improved stone-planing machine



Mult-mmm. PATENTED JAN 25 1870 17mg @Mouth 5i-imi states latent lliliicr.

` and huiMing-purposes.

ANonnws 'r. ni;ituii\1AN, or enIeAoo, iLLlNoIs.

Letters Patent No. 99,218, dated January 25, 187.0.`

IMPROVED STO-PLANING- MACHINE.

Th Schedule referred to 1u thele Lettera Patent and making part-cf the name.

To all 'whom 'it may concern lie it known that' I, Axounws T-Mnninuax of Chicago, in the county ol' Cook, and State ot' illinois, have invented a. new and nsel'ul improved Stone-Planiug Machine; and l do herebj declare the following to be a full, clear, and exact description thereof, which will enablev others skilled in the. .art to whichlny invention appertains, to make. and. use thesame, reference being had tothe :wconlpanjingdrawings,thrilling partot' this specilieation, in which the ligure is a transverse vertical section ot' my improved stone-planing inaehine.. g

M y invention has i'or its object to more ci'eciually plane the surfaces ot' stones employed for pavements it consists, tirst, in a stone-planing machine, adapted to plane the top and one or both edges ot' a stone, either plain or otherwise, simultaneously.

, lt lurther consists in the construction of the box for holding the tools which plane the upper surface of a stone, whereby said surlaee can he planed to its ex- -tremc edge while the/latter is being cut.

ln the accompanying drawings- A is the hed or frame oi' the planer, tothe' two opposite sides ot which are bolted the uprights B, which are connected together by the top plate or beam L.

1) is the plate or table u'pon which the. stone is held while being eut, and adapted to be moved upon thc guides llA ll longittulinall-v of the frame A, by means oi' the serew-shalt l", working through a nut, G, upon the under surlacc of the table, and having tits bearings in th' frame A.

.Motion is communicated to the. screw for moving the table, through the band-wheel Il', aliixed to the end of said screw,l or b v any other suitable means.

1 is a cross-bar or frame for carrying the tool-boxes.

All. is suspended at ,each eml from the top plate C, by means of the. vertical screws J, having bevelled pinions l upon their upper ends, which engz'tg'e with eorrespoiuling pinions upon the longitudinal shalt L, upon the top plate.

By operating the. shaft L, tht` cross-bar is raised or lowered, being guided in its movements by projections upon isbaek, working in the' vertiealislot-s of the standards B. g

M. are handleranlis upon the ends of the shaft- L, by` which said shaft is operated. l

N N are the tool-boxes, carrying the side-cutters O. t

'.lhey :p'e each composed of a rectangular box', whose side pieces l are fitted upon screw-rods Q, Q, which extend through the ends o t' the cross-har l, and parallel with the same. By operating' these screw-rods, the two boxes are moved to or from. each other. "The front 'plates R ot the tool-boxes carry, near their lower ends, the cutters 0, and are moved verti- ,lt is suspiL-nded upon the longitudinal screw-rod V,

and is, by said screw-rod, adjusted laterally between the tool-boxes N N;

The toolbox U is composed of aback plate, W,

through which the screw-rod V. passes, and a. front plate, X, to which the tools or cntiersY are attached, in the position shown in the drawings.

The front plate X is hinged, at`Z, to the face ofthe back plate, and its side bars or plates A' tit over the side ct' said back platcf.

By this construction, the cutters Yare permitted to he moved laterally over the stoue'to the cxtreine'cdge ofthe same, while the side-cutters 0 are in operation.

'lhis could not be accomplished if the bac-k platcW of the tool-box U were provided with side. bars, and the front plate X adapted to tit between them, for the reason that said side: bars would project so far 1atcrally as to prevent the cutters from being placed at. thc extreme edges ot' the tool-box, and would, therefore, leave a space between them and the side-cutters O, which space would remain upon the stone unplancd.

The operation is as follows:

A stone to be plant-d or cut is placed upon thef table D, being rctainedpin place by means of pointed screws working through-finirstuds, B', which are adapted t0 titin holes formed in the table. When the stone has been so secured, the tool-bert U is moved, lay-means' of the rod Y, to one side ot' thefra-ine, and adjusted so that its cutters shall makel the requisite cut', by operating thc cross-bar I, as before mentioned.

The stone is then fed longitiuliuallyot' the machine, 'against the cut-ters, by operating the table, through the medium of the screw-shaft F, thus cutting a smooth surface, ot the width of all the cutters. lhe stone isjcetions upon the stone, during its backward movement.. Without this provision, the chips of stone coming against the hacks of the cutters would bc liav-ble to break and injure them, whereas, it' .they swing ontward, theyf--patss readily over snch"obstruetions,- without injury.

One ox' both edges of the .stone are eut ofv'th'e required fo1'm,fby adjusting the side-cutters' 0. longitudinally andveltiqally of the dross-bar I, as vpxeviouxsly described; so that the stone shall be' fed against them,

`in its passage through the machine. v When the cuttersY become' dulled, they may be.v

plate X removed, forl sharpening, by nnhingin'g,t the from the back plate Having thus described my invention, Whatl claim' as nem-and desire to secure by Letters 1.- In. a stone-planingmachine, the top and side-cut ters, constructed and 'combined to cut the t'op and one or more edges of a stone simultaneously, substantially as descilbed. 1 I

2. The monbox U, having me me bars-gef' the e hinged tlont plate X, `auapted to enclose ,the 'sides of the back plate W, substantially Aas dcsex-ibed, for thev purpose specified. ANDREWS T.' MER.RDSLIAN. 

